CN101976986A - Independent power supply system based on multi-energy hybrid power generation - Google Patents
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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Abstract
一种利用多种能源互补发电的独立供电系统，包括风力发电机通过三相整流电路与控制器连接，光伏电池板直接与控制器连接；控制器内包含充放电控制电路、整流滤波电路、光伏电池板自动跟踪控制电路；充放电控制电路与蓄电池相连，光伏电池板自动跟踪控制电路与光伏电池板支架上的步进电机相连，控制器与柴油发电机的开关连接，控制器还通过逆变电路与用户负载连接，柴油发电机直接与用户负载相连。本发明在充分考虑当地风能、太阳能资源分布情况下，结合用户需求，设计一套利用多种能源互补发电系统，最大限度的提高发电系统效率，降低成本。
An independent power supply system that utilizes multiple energy sources for complementary power generation, including a wind generator connected to a controller through a three-phase rectifier circuit, and a photovoltaic panel directly connected to the controller; the controller includes a charge and discharge control circuit, a rectification filter circuit, a photovoltaic The battery panel automatic tracking control circuit; the charging and discharging control circuit is connected with the storage battery, the photovoltaic panel automatic tracking control circuit is connected with the stepping motor on the photovoltaic panel support, the controller is connected with the switch of the diesel generator, and the controller is also connected through the inverter The circuit is connected to the user load, and the diesel generator is directly connected to the user load. In the present invention, fully considering the distribution of local wind energy and solar energy resources, and combining user needs, a set of complementary power generation systems using multiple energy sources is designed to maximize the efficiency of the power generation system and reduce costs.
Description
技术领域technical field
本发明是一种利用多种能源互补发电的独立供电系统，属于可再生能源发电领域。The invention is an independent power supply system utilizing multiple energy sources for complementary power generation, and belongs to the field of renewable energy power generation.
背景技术Background technique
传统的供电方式是由集中式大型发电厂发出的电能，经过电力系统的远距离多级变送为用户供电，然而常规电网难以覆盖或者有特殊需要的地区和用户则对独立供电系统的需求越来越大。独立供电系统电能产生可采用不同的方法，例如潮汐发电，太阳能电池，风力发电，柴油发电机等。由于潮汐能发电受到用户地理条件的限制（必须在海边地区）且技术复杂，而柴油发电机仍然消耗传统能源而且会污染环境，风力发电具有空间分布不均匀的缺点，太阳能发电则有时间分布不均匀的特点，因此采用任何一种方法发电都有局限性。The traditional power supply method is the electric energy generated by a centralized large-scale power plant, which is supplied to users through long-distance multi-level transmission of the power system. However, areas and users that are difficult to cover with conventional power grids or have special needs have more and more demands on independent power supply systems. bigger and bigger. Different methods can be used for power generation in independent power supply systems, such as tidal power, solar cells, wind power, diesel generators, etc. Because tidal power generation is limited by the user's geographical conditions (it must be in the seaside area) and the technology is complex, while diesel generators still consume traditional energy and pollute the environment, wind power has the disadvantage of uneven spatial distribution, and solar power has uneven time distribution. Uniform characteristics, so there are limitations in using either method to generate electricity.
发明内容Contents of the invention
为了克服采用单一能源发电的独立供电系统的不足，本发明提供了一种利用多种能源互补发电的独立供电系统。该发电系统在充分考虑当地风能、太阳能资源分布情况下，结合用户需求，设计一套利用多种能源互补发电系统，最大限度的提高发电系统效率，降低成本。In order to overcome the deficiency of an independent power supply system using a single energy source for power generation, the present invention provides an independent power supply system for generating complementary power sources using multiple energy sources. The power generation system fully considers the distribution of local wind energy and solar energy resources, and combines user needs to design a complementary power generation system that utilizes multiple energy sources to maximize the efficiency of the power generation system and reduce costs.
本发明的技术方案如下：Technical scheme of the present invention is as follows:
一种利用多种能源互补发电的独立供电系统，其特征在于：风力发电机通过三相整流电路与控制器连接，光伏电池板直接与控制器连接；控制器内包含充放电控制电路、整流滤波电路、光伏电池板自动跟踪控制电路；充放电控制电路与蓄电池相连，光伏电池板自动跟踪控制电路与光伏电池板支架上的步进电机相连，控制器与柴油发电机的开关相连，控制器还通过逆变电路与用户负载连接，柴油发电机直接与用户负载相连。An independent power supply system using multiple energy sources for complementary power generation, characterized in that: the wind generator is connected to the controller through a three-phase rectification circuit, and the photovoltaic panel is directly connected to the controller; the controller includes a charging and discharging control circuit, rectification and filtering circuit, photovoltaic panel automatic tracking control circuit; the charging and discharging control circuit is connected to the storage battery, the photovoltaic panel automatic tracking control circuit is connected to the stepping motor on the photovoltaic panel support, the controller is connected to the switch of the diesel generator, and the controller also It is connected to the user load through the inverter circuit, and the diesel generator is directly connected to the user load.
控制器内还包括温度检测保护电路和系统电压检测保护电路，温度检测保护电路和系统电压检测保护电路分别与系统中风力发电机、光伏电池板和控制器上安放的温度传感器和电压传感器相连。The controller also includes a temperature detection protection circuit and a system voltage detection protection circuit. The temperature detection protection circuit and the system voltage detection protection circuit are respectively connected with the temperature sensor and the voltage sensor placed on the wind power generator, the photovoltaic panel and the controller in the system.
蓄电池为铅酸蓄电池或者锂电池。The storage battery is a lead-acid storage battery or a lithium battery.
控制器还连接卸荷电阻。The controller also connects the unloading resistor.
本发明的有益效果是: 充分利用可再生能源发电，合理利用自然资源，保护环境；利用多种能源互补发电的独立供电系统可以解决边远地区用电，为渔船、游牧民和边防哨所等提供可靠用电；采用最大光电能量转换率的方案，提高光伏电池板利用效率，并配备柴油发电机，提高供电系统的可靠性，改善系统的经济和社会效益。The beneficial effects of the present invention are: make full use of renewable energy to generate electricity, rationally utilize natural resources, and protect the environment; the independent power supply system using multiple energy sources for complementary power generation can solve the problem of electricity consumption in remote areas, and provide reliable power supply for fishing boats, nomads, and border posts Electricity consumption: adopt the scheme of maximum photoelectric energy conversion rate to improve the utilization efficiency of photovoltaic panels, and equip diesel generators to improve the reliability of the power supply system and improve the economic and social benefits of the system.
附图说明：Description of drawings:
图 1 为利用多种能源互补发电的独立供电系统结构示意图。Figure 1 is a schematic diagram of the structure of an independent power supply system using multiple energy sources for complementary power generation.
具体实施方式：Detailed ways:
下面结合附图对本发明进行具体说明：The present invention is described in detail below in conjunction with accompanying drawing:
图 1 为利用多种能源互补发电的独立供电系统结构示意图，如图所示，风力发电机通过三相整流电路与控制器连接，光伏电池板直接与控制器连接；风力发电机通过三相整流电路整流后与光伏电池板发出的电能一起送入控制器中；控制器内包含充放电控制电路、整流滤波电路、光伏电池板自动跟踪控制电路、温度检测保护电路和系统电压检测保护电路；充放电控制电路与蓄电池相连。光伏电池板自动跟踪控制电路与光伏电池板支架上的步进电机相连，温度检测保护电路和系统电压检测保护电路分别与系统中风力发电机、光伏电池板和控制器上安放的温度传感器和电压传感器相连。温度检测保护电路和系统电压检测保护电路可以实时检测系统，实现多种工作状态的实时切换，满足用户的供电需求，同时，对检测到的温度和电压信息通过控制器进行分析，实现监测系统的工作状态的作用，当系统出现问题时能及时作出响应，避免更大的损失。控制器与柴油发电机的开关连接，用来启动和关闭柴油发电机工作。控制器与逆变电路相连，通过逆变电路将直流电变换成交流电供用户负载使用。控制器与卸荷电阻相连。柴油发电机也与用户负载相连，可直接供给用户负载。Figure 1 is a schematic diagram of the structure of an independent power supply system using multiple energy sources for complementary power generation. As shown in the figure, the wind turbine is connected to the controller through a three-phase rectification circuit, and the photovoltaic panel is directly connected to the controller; the wind turbine is connected to the controller through a three-phase rectification circuit. After the circuit is rectified, it is sent to the controller together with the electric energy generated by the photovoltaic panel; the controller includes a charge and discharge control circuit, a rectification filter circuit, a photovoltaic panel automatic tracking control circuit, a temperature detection protection circuit and a system voltage detection protection circuit; The discharge control circuit is connected with the storage battery. The photovoltaic panel automatic tracking control circuit is connected with the stepper motor on the photovoltaic panel support, and the temperature detection and protection circuit and the system voltage detection and protection circuit are respectively connected with the temperature sensor and voltage sensor placed on the wind power generator, photovoltaic panel and controller in the system. The sensor is connected. The temperature detection and protection circuit and the system voltage detection and protection circuit can detect the system in real time, realize the real-time switching of various working states, and meet the power supply needs of users. At the same time, the detected temperature and voltage information are analyzed by the controller to realize the monitoring system. The role of the working status, when the system has problems, it can respond in time to avoid greater losses. The controller is connected with the switch of the diesel generator to start and stop the diesel generator. The controller is connected with the inverter circuit, and the direct current is converted into alternating current through the inverter circuit for use by user loads. The controller is connected to the unloading resistor. The diesel generator is also connected with the user load and can directly supply the user load.
光伏电池板和风力发电机为可再生能源采集装置，可以分别将风能和太阳能转化为电能。蓄电池可以采用铅酸蓄电池或者锂电池，用于储存发电系统所发出电能中尚未被用户使用的多余电能。卸荷电阻为功率电阻，根据发电系统最大发电高功率值选取功率电阻。柴油发电机通过燃烧柴油产生电能，当可再生能源无法产生电能并且蓄电池中的电量耗尽的时候，可启动柴油发电机直接对用户供电，从而保证用户供电的可靠性。由于柴油发电机只在极端条件下使用，所以柴油发电机所产生的环境污染程度是很小的，可以忽略。另外，由于系统中柴油发电机作为应急电源的存在，使得该系统对用户供电的可靠性大大提高。Photovoltaic panels and wind generators are renewable energy harvesting devices that convert wind and solar energy into electricity, respectively. The storage battery can be a lead-acid storage battery or a lithium battery, which is used to store the excess electric energy that has not been used by the user in the electric energy generated by the power generation system. The unloading resistor is a power resistor, and the power resistor is selected according to the maximum power generation value of the power generation system. Diesel generators generate electricity by burning diesel. When renewable energy cannot generate electricity and the power in the battery is exhausted, the diesel generator can be started to directly supply power to users, thereby ensuring the reliability of power supply for users. Since diesel generators are only used under extreme conditions, the degree of environmental pollution produced by diesel generators is very small and can be ignored. In addition, due to the existence of the diesel generator in the system as an emergency power supply, the reliability of the system's power supply to users is greatly improved.
三相整流电路将风力发电机发出的三相交流电整流成直流电，与太阳能光伏电池发出的直流电一起送入控制器中的整流滤波电路进行电流调制。如果此时用户需要电能供给，则可以通过逆变电路将直流电转变成交流电供用户负载使用，如果用户此时不需要电能供给，则可将直流电能通过充放电控制电路输入蓄电池储存起来，若此时充放电控制电路检测到蓄电池已充满电，则所产生的直流电将通过卸荷电阻释放掉，保护蓄电池不因为过充而失效，延长了蓄电池的使用寿命。The three-phase rectification circuit rectifies the three-phase alternating current generated by the wind generator into direct current, which together with the direct current generated by the solar photovoltaic cell is sent to the rectifying and filtering circuit in the controller for current modulation. If the user needs power supply at this time, the DC power can be converted into AC power through the inverter circuit for the user's load. If the user does not need power supply at this time, the DC power can be input into the battery through the charge and discharge control circuit for storage. When the charging and discharging control circuit detects that the battery is fully charged, the generated direct current will be released through the unloading resistor to protect the battery from failure due to overcharging and prolong the service life of the battery.
由于风能和太阳能的时空分布不均匀，在系统使用过程中存在有一种可再生能源无法被正常利用发电的情况，此时控制器能够检测到系统中无法发电的供电设备，并通过控制电路将该设备与系统隔离，系统利用另外一种可再生能源发电。当只利用一种可再生能源发电或者太阳能和风能都无法被利用正常发出电能的时候，蓄电池将通过充放电控制电路来释放蓄电池中储存的电能通过逆变电路转换成交流电供给用户负载使用，若蓄电池中的电能也释放完后，则控制器启动柴油发电机直接对用户供电，从而保证用户供电的可靠性。控制器中的光伏电池板自动跟踪控制电路可以通过感光元件检测太阳高度角信息，并根据太阳高度角通过控制光伏电池板支架上的步进电机调整光伏电池板的角度，保证光伏电池板的光电能量转换率为最大值，提高系统的效率。Due to the uneven temporal and spatial distribution of wind energy and solar energy, there is a situation that renewable energy cannot be normally used for power generation during system use. At this time, the controller can detect the power supply equipment in the system that cannot generate The equipment is isolated from the system, and the system uses another renewable energy source to generate electricity. When only one kind of renewable energy is used for power generation or neither solar energy nor wind energy can be used to generate electricity normally, the battery will release the electric energy stored in the battery through the charge and discharge control circuit and convert it into AC power for user loads through the inverter circuit. After the electric energy in the storage battery is also released, the controller starts the diesel generator to directly supply power to the user, thus ensuring the reliability of power supply to the user. The photovoltaic panel automatic tracking control circuit in the controller can detect the sun altitude angle information through the photosensitive element, and adjust the angle of the photovoltaic panel by controlling the stepping motor on the photovoltaic panel bracket according to the sun altitude angle to ensure the photoelectricity of the photovoltaic panel The energy conversion rate is maximized, improving the efficiency of the system.
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Application publication date: 20110216 |